Despite being heartily outplayed across the period, Vancouver found a way to knot the score at three.

Pettersson circled the Calgary zone, patiently waiting for an opportunity before getting a pass off to Boeser alone in the face-off circle. The right-winger wound up and ripped a wrist shot past Rittich.

Pettersson also assisted on Leivo’s goal and now has 50 points in his first 45 NHL games.

The Canucks will be back in action on Monday when they host the surging San Jose Sharks, who are on a five-game win streak.

The Flames will continue their road trip with a visit to the league-leading Tampa Bay Lightning on Tuesday.

NOTES: The Canucks confirmed on Saturday that left-winger Sven Baertschi will be out of the lineup indefinitely. Coach Travis Green said he is suffering from post-concussion syndrome. The team is also missing backup netminder Thatcher Demko, who’s out with a knee sprain, and defenceman Alex Edler, who has a concussion. … Calgary’s James Neal was missing some teeth after Saturday’s contest. An official collected at least two teeth from the ice after the left-winger caught a high-stick from Vanncouver’s Alex Biega midway through the third period. Biega was handed a four-minute penalty for the play.